Question 4
Question 4(a)
(a)
Using the data in Table 1.4, calculate the four period centred moving average for Quarter 1 2025.
[ 4 ]
Question 4(b)
(b)
Evaluate the usefulness of time series analysis to KTJ in making business decisions.
[ 12 ]

Practise time series calculations and judge how sales forecasts support marketing decisions under changing business conditions.
Using the data in Table 1.4, calculate the four period centred moving average for Quarter 1 2025.
Evaluate the usefulness of time series analysis to KTJ in making business decisions.